I have a pair of SEAS CA18RN/TV woofers. The are new and unused. They are the same as the RNX with an added bucking magnet and shield. They are shielded to eliminate interference on old CRT TVs. Not much use for the shielding now, but they are excellent woofers. Madisound wants $75 each for RNX. You can have the pair for $100 shipping included.